How to compress SWF and reduce Flash (.swf) size

This page is about SWF Compressor for Windows

For Mac version click here

Want to know how to compress SWF files?

Anyone who is involved in creating or administrating websites can face the problem of content being too big in size, specifically SWF banners, movies or slide shows.

If you are looking for a solution that will help you reduce SWF file size you are at the right website! You don't even have to know Flash technology well to compress Flash files. SWF compression with Flash Optimizer by Eltima will not only solve the file weight issue easily and quickly, but also with a high quality, because SWF file can be reduced up to 60-70% and depending on the file properties it can be done with no quality loss.

Flash Optimizer is the only SWF compression tool that fully supports Flash 5, 6, 7, 8, 9 and Flash 10 (CS4).

Step by Step

Full features list

Full features list:

Revolutionary compression methods that allow to optimize SWF files to save up to 70% of their original size
Vectors & curves optimization
ZLib compression (can be applied and removed)
Shapes optimization
Morphing optimization
Fonts optimization
Zero-objects optimization
Sounds compression
Embedded video compression
Intuitive Flash movies manipulation
Easy preview and interactive comparison of the original and compressed movies
Simple and Advanced optimization settings - customize every compression option
Customizable optimization settings presets (compatible with Mac version of Flash Optimizer)
Batch compression mode
Command-line interface (available in Business and Company licenses)
Detailed logging of every event that takes place during compression

Demo version limitations:

Though you will still see the optimized file preview in color, optimized files will be saved in black and white palette in Demo version.

Interface languages:

Compatible with:

Windows XP 32-bit
Windows XP 64-bit
Windows 2003 32-bit
Windows 2003 64-bit
Windows 2008 32-bit
Windows 2008 64-bit
Windows Vista 32-bit
Windows Vista 64-bit
Windows 7 32-bit
Windows 7 64-bit

So here's how to compress SWF files with SWF Compressor by Eltima

1. Download Flash Optimizer right from this page and install it on your computer following easy and familiar installation steps.

2. Choose whether you want to compress one SWF file or many of them at once by switching to the corresponding tab. Then either browse for the one SWF file you are going to compress or add the multiple tasks to the tasks list.

browse

3. Select the folder where you want compressed movies to be saved to and in case you are compressing one file, select the new name for it. By default "opt" suffix will be added to original file name.

4. For your convenience Flash Optimizer features selection of predefined optimization settings: Sprite, Medium, Basic, Good and Best. Just select one of them and you are good to start optimizing. You also have an option to load Custom optimization settings if you already have ones and saved them to a file before. And if you feel like digging deeper into each setting, just press the arrow down and you will be able to choose more profound and fine settings up to your needs.

compress swf

5. After all settings are applied you can preview the output before starting the compression itself. Press "Preview compression" button to see the file details and compare the original file with the compressed one.

results

6. Press "Compress" button to start optimization process.

Demo-version of Flash Optimizer is available for download.